Ethtool read mdio register This is a known hardware erratum (see H/W errata doc). 2. Address of the register to read. The current software workaround is to use a global Ethtool is also reporting that we are in MII mode when I expect it should be in MII-X mode; checking the TI datasheet and manually reading back MDIO registers I confirmed that it is enabled in SGMII mode. Reload to refresh your session. Thanks. -R, --reset Reset the MII to its default configuration. This shows that the MAC is set-up for a 10Mbps link speed and half-duplex mode. 4 AXI ref design for the ML605 - seems to be working quite nicely, save one issue. PHY at address 1: 2304 - 0x0. The PHY registers can be accessed via driver IOCTLs. */ And MII register constants are defined in: Try to use mii-tool or ethtool. irq = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_MMD_PCS_MV_GPIO_INT_STAT); This is a handy tool to read and write registers of a PHY attached to a network device. I found a nice example of how to do it using ioctl or ethtool - When raw is enabled, then ethtool dumps the raw register data to stdout. Browse the source of linux v6. With driver e1000e will fail while reading register 0x07. com/PieVo/mdio-tool. 3 MDIO Software Interface. root@OpenWrt:/# ethtool -m lan17 Identifier : 0x03 (SFP) Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID) Connector : 0x07 (LC) Transceiver codes : 0x00 0x00 0x00 0x01 0x00 0x00 0x00 0x00 But by setting autonegotiation OFF on one card using ethtool, it shows "Link is Up" on one card and not on the other. Please see https://github. 8 0x0379. mdio: 00 , driver SMSC LAN8710/LAN8720 Hey! I need to link a board with a 10BaseT1L chip and a board with an MT7621 processor. blob: 9991ce2ef7ca3ac035fb009f46a556b06c2d28d0 [] [] [] Anyway it is also possible to talk via MDIO bus directly through the IP registers (as stated on the Datasheet (DS580) at page 16. RW . kernel. Is there any register I can read that will show the number of frames the GEM0 has transmitted and received? * @mdio_support: Bitmask of %ETH_MDIO_SUPPORTS_* flags for the MDIO Read-only; deprecated. returning stale or previous data), or sends incorrect data on MDIO writes. As a result, things like read/mask/write operations and accesses to paged PHYs can be performed 347 348 For example a user can be use the ethtool support 349 to get statistics: e. Memory mapped at address 0xffff8a41e000. This is especially useful when there is a PCS involved (and the ethtool reads are faked), when there is no MAC associated with a PHY, or when the MDIO device is not a The MDIO bus¶ Most network devices are connected to a PHY by means of a management bus. In the original specification, a single MDIO interface is able to access up to 32 registers in 32 different PHY devices. It has been tested with Realtek and Marvell PHY's connected via PCIe and should work with all drivers implementing the mdio ioctls. To access other registers, for example the bootstrap I want to read/modify the Phy registers at Linux, please note that iam able to read/modify the phy at u-boot using : mii read and mii write commands, but iam unable to read/modify when the linux boots. If no internal MDIO bus is listed, then add one internal MDIO bus for every PCS port target that will be used in a backplane connection. com Subject: [PATCH 04/16] sfc: Use generic MDIO functions and definitions Date: Wed, 29 Apr 2009 19:05:08 +0100 [thread overview] Message-ID: <1241028308. get_regs_len: ethtool function returning the I generate the ethtool source code with command bitbake ethtool -c patch -f and find them in build how to use this source files to read and write by MDIO interface? 0 Kudos Reply 09-27-2016 01:24 read MII PHY <addr> register <reg> mii write <addr> <reg> <data> – write MII PHY <addr> register <reg> mii dump <addr> <reg y Read Register From C22 Register 14 on Port PPPPP z Read Operation Takes 4 Steps. Instructions on how to install, compile and use mdio-tool are as Oct 24, 2022 · There are several different tools available in a Linux environment to read and write registers on a TI PHY. ‘sudo . In the console, I got the following prints, when I turned off the auto negotiation on one card: Read the MDIO register (MDIO Read Data Reg) (this step is only for MDIO read from PCS/PMA reg). 39-1%2Bdeb8u1~bpo70%2B1. Their prototypes are: */ int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum); /** * phy_read_mmd_poll_timeout - Periodically poll a PHY register until a * condition is met or a timeout occurs * * @phydev: The phy_device struct * @devaddr: The MMD to read from * @regnum: The register on the MMD to read * @val: Variable to read the register into * @cond Read the MII management indicator register and check for Busy = 0. Follow As a sanity check, users should read the PHY ID (0x2, and 0x3): So, here 0x02 = 2000, and 0x3 = 0xa231 which is expected for my TI PHY. &gem2 { phy-mode = "moca"; fixed-link { speed = <100>;; full-duplex; }; };</code><p>Even when I add the above to the device tree, in linux, it shows up properly when phy_read: Function invoked by the DSA user MDIO bus when attempting to read the switch port MDIO registers. h> #include <linux/mdio. Examples # miitool r eth0 1 # miitool w eth0 0 0x1000. The old API only supported a single read or write of a single register. After spending quite a while trying to get mii-tool and ethtool working for setting the link speed, I gave up and turned to a ugly hack in xilinx_emaclite. 5 0x7777 mdio wx cpsw 2. I would suggest to talk to the phy via ioctl if the kernel driver supports it (it seems to do so via of_mdio, but I have not tried). > > Now, looking at phy_init_eee(), and what stmmac does (and bcmgenet, > copied after stmmac), we need to somehow, have EEE advertised for > phy_init_eee() to succeed, prepare Note: on the realtek target device, ethtool -i <port> reports supports-eeprom-access: no but eeprom on SFP module can be read via i2c. U-Boot# mdio list cpsw: 0 - Micrel ksz9031 <--> cpsw Read the SKEW registers first: mdio rx cpsw 2. Although i used the ethtool -d command, but it is not working in the linux. In order to actually attach the SFP bus by using DTS property driver for that PHY must define sfp_upstream_ops and register them via phy_sfp From dmesg: [ 26. MDIO support must be enabled in the IP core at compile time. We forced the The management of these PHYs is based on the access and modification of their various registers. Several of these options are listed below. So far our code can call the ixgbe_mdio_read() function but we always get the reg-value 0xFF. get_regs_len: ethtool function returning the register To whom it may concern: I’ve changed the original version of the driver for Airoha EN8811H 2. local ethtool -s eth0 speed 100 duplex full autoneg on 1>/dev/null 2>/dev/null ethtool -s eth1 speed 100 duplex full autoneg on 1>/dev/null 2>/dev/null 5. 502403] TI DP83867 ff0d0000. / ethtool. From: Ben Hutchings <bhutchings@solarflare. General Purpose MicrocontrollersGeneral Purpose Microcontrollers. ffffffff81b66fae t fixed_mdio_bus_exit ffffffff81af4468 t fixed_mdio_bus_init ffffffff813977f0 t fixed_mdio_read ffffffff81397610 t fixed_mdio_write ffffffff81a68760 d mdio_bus_class ffffffff813971b0 T mdio_bus_exit ffffffff81af4425 T mdio_bus_init ffffffff81396fd0 t mdio_bus_match ffffffff81a687e0 d mdio_bus_pm_ops ffffffff81396ff0 t mdio_bus I have a need to access Ethernet PHY MDIO registers from user space. After booting on Linux I have read the pin mux configuration registers for these two pins (MIO_PIN_77 & MIO_PIN_76) . get_regs_len: ethtool function returning the Linux kernel variant from Analog Devices; see README. /phytool read enp2s0/5/0xe’ diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index bc7eef1. MDIO was originally defined in Clause 22 of IEEE RFC802. ethernet-ffffffff:05: attached PHY driver [TI DP83867] (mii_bus:phy_addr=ff0d0000. Reading from bus eth0. License. Their prototypes are: ethtool Command in Linux - Linux provides a useful command line tool “ethtool” to manage and troubleshoot the network interfaces. 3. We then proceeded to read back the GEM1 network configuration register using devmem 0xE000C004, the value read back is 0x010EA140. These registers are typically used to communicate with an external optical module such as a PMD 100G optical module. Product Forums 23. * @mdio_support: Bitmask of %ETH_MDIO_SUPPORTS_* flags for the MDIO Historically used to report TX IRQ coalescing; now * obsoleted by &struct ethtool_coalesce. get_regs_len: ethtool function returning the register 2. 957061] BPF: stat2 = mdio->mdio_read(mdio->dev, prtad, mmd, MDIO_STAT2); set or clear flag in an MDIO register * @mdio: MDIO interface * @prtad: PHY address * @devad: MMD address * mdio45_ethtool_ksettings_get_npage - get settings for ETHTOOL_GLINKSETTINGS * @mdio: MDIO The remaining patches are a bit miscellaneous: - Extend generic flow control/pause frame support and change the sfc driver to use it - Add fields to the ethtool_cmd structure to report the supported MDIO mode(s) and link partner advertising flags, and implement these in the mdio and mii modules - Add support for backplane (1000BASE-KR and PHY registers are accessed via packets on a serial management bus known as MDIO, SMI or MIIM, depending on who you ask. (I am assuming that the write to the MDIO control register is what enables it. /phytool write enp2s0/5/0xe 0x0a00’ ‘sudo . mdio: phy[ 0 ]: device 4a101000. They select the page, read or write the register, and restore the original page, all while holding a lock on the bus to prevent interference from other code that is trying to access the registers. When raw is enabled, then it dumps the raw EEPROM data to stdout. get_regs_len: ethtool function returning the I was reading the SGMII specification and the documentation of a Gigabit MII to SGMII converter (see MAX24287). I found a nice example of how to do it using ioctl or ethtool - see attached. get_regs_len: ethtool function returning the register Hopefully an easy question - I've build as system using based on the 12. What to do? How make IOCTL with SIOCGMIIREG External MDIO read issue External MDIO reads 0 every now and then when ENETC registers are accessed concurrently with MDIO accesses. PLease provide your help/support. For Ethernet switches which have both external and internal MDIO busses, the slave MII bus can be utilized to mux/demux MDIO reads and writes towards either internal or external MDIO devices this switch might be connected to: internal PHYs, external PHYs, or even external switches. Ethernet PHY registers tool provide a simple way to read/write PHY registers by MDC/MDIO. links: PTS, VCS area: main; in suites: wheezy-backports; size: 744,064 kB; sloc: ansic: 12,230,091; asm: 277,426; xml: 47,771 Spotify's Linux kernel for Debian-based systems. In order to analyse and show the value in Linux environment, and I needs to read and write the value of phy register via MDIO. Describe the bug mt6271 devices with sfp cannot read EEPROM from SFP module using ethtool -m In order to actually attach the SFP bus by using DTS property driver for that PHY must define sfp_upstream_ops and register them via From dmesg: [ 26. Their prototypes are: TDA4VM: Reading the mdio register of external phy connected to mdio bus in userspace in linux. 2. ) Note that, in earlier testing, I found that I could read the MDIO register space without hanging up to a certain point in the initialization. get_regs_len: ethtool function returning the register phy_read: Function invoked by the DSA user MDIO bus when attempting to read the switch port MDIO registers. Phytool – Provides hexadecimal register dumps and can also write register Nov 24, 2024 · 在 嵌入式开发 中，可以通过 smi /mdio总线通信访问PHY芯片寄存器，获取PHY芯片的状态。 总体思路： 可通过ioctl 函数 向内核发出控制命令读取phy芯片的寄存器。 首先打 You can dump registers using ethtool, but for read/write accesses to individual registers you can refer to mdio-tool. The MDIO bus¶ Most network devices are connected to a PHY by means of a management bus. I do not see a MDIO to control the registers of the PHY (Basic Mode Status Register, Basic Mode Control Register, ) in the SGMII specification. supports-priv-flags: yes. g. 0x1 is not a known ethernet . This makes it easier to debug devices. Essentially just modifying the phy_write() commands to Sign in. h> #include <ti/csl/csl_mdioAux. I have checked the hardware circuit and software configuration according to the RX72M+YT8512H given by the agent, but there is still no effect. I want to read the phy register using mdio mdio-bitbang, mdio-gpio linux driver. Improve this answer. > > > Hello, > >> Add driver to support the Maxlinear GPY115, GPY211, GPY212, GPY215, >> GPY241, GPY245 PHYs. mdio: 00 , driver SMSC LAN8710/LAN8720 Linux kernel source tree. h> * Description: Reads the ID registers of the PHY at @addr on the * @bus, then allocates and returns the phy_device to represent it. y / . %PDF-1. using: ethtool -S ethX 350 (that shows the Management counters (MMC) if supported) 351 or sees the MAC/DMA registers: e. Sadly, it seems to find all Fs instead: [ 0. Mar 29, 2024 · 如果 Ethtool 不起作用，也则可以使用构建的 mdio-tool 单独读取数据表中的寄存器。 mdio-tool的安装、编译和使用说明如下: 1. Authors. 0 DRAM: 2 GiB EL Level: EL2 Chip ID: zu3eg MMC: mmc@ff160000: 0 (eMMC) SF: Detected n25q128 with page size 512 Bytes, erase size 128 KiB, total 32 MiB *** Warning - bad CRC, using default static int ax88772_ethtool_get_sset_count(struct net_device *ndev, int sset) 1. 4 0x0071 mdio wx cpsw 2. read and write functions must be implemented. It is also possible that the MDIO interface becomes unavailable until the next peripheral reset (either by LPSC reset or global device reset with reset isolation For Ethernet switches which have both external and internal MDIO busses, the slave MII bus can be utilized to mux/demux MDIO reads and writes towards either internal or external MDIO devices this switch might be connected to: internal PHYs, external PHYs, or even external switches. and both TI-PHY seating on MDIO bus at address 0x0 and 0xF. Main goal is to have it functional on kernel v6+ and have it using phylink. mdio-tool comes with ABSOLUTELY NO WARRANTY; Use with care! Linux kernel source tree. IMHO, there is no CSL function to *read* MDIO registers. SIOCGMIIPHY on 'eth5' failed: Invalid argument. 364077] mtk_soc_eth 1e100000. -r, --restart Restart autonegotiation. On the computer side ethtool eth0 reports that link is detected and tries to send packets on the phy as can be seen from the port LED activity. 01 (Feb 13 2020 - 21:18:13 \+0000) Xilinx ZynqMP ZCU102 rev1. get_regs_len: ethtool function returning the register The official Linux kernel from Xilinx. I have a need to access Ethernet PHY MDIO registers from user space. 6 0x1111 mdio wx cpsw 2. It fails just reading MDIO control register (at 0x02090304), although it does not fail during a write (see code above). Not all MDIO drivers support the port:device Clause 45 address format. They are connected via RGMII, I was able to achieve initialization of the chip in the Linux kernel, however, there is no communication between two such devices (a bunch of 10BEYST1L and MT7621). The EN8811H is used on the BPI-R3mini. md for details - analogdevicesinc/linux The ADIN1300 supports a range of extended management interface registers which can be accessed using Clause 45 access or alternatively using Clause 22 access through the EXT_REG_PTR (address 0x0010) and EXT_REG_DATA (address 0x0011), these registers provide user ability to read/write to the extended register space (any register greater than When raw is enabled, then ethtool dumps the raw register data to stdout. 17 Operation of C22 to C45 STAs AND work with Clause 22 MDC/MDIO STAs using Registers 13 & 14. 3246. I was able to access the same from Uboot successfully but in Linux I am trying to use phytool utility (cross-compiled. Set up the MII management for a write cycle to the TBI control register (write the PHY address and register address). It is also possible that the MDIO interface becomes unavailable until the next peripheral reset (either by LPSC reset or global device reset with reset isolation net: stmmac: Add PCI bus info to ethtool driver query output stmmac: intel: Fix mdio bus registration issue for TGL-H/ADL-S stmmac: intel: add cross time-stamping freq difference adjustment stmmac: intel: use managed PCI function on probe and resume net: stmmac: remove unnecessary pci_enable_msi() call net: stmmac: fix memory leak during driver Describe the bug mt6271 devices with sfp cannot read EEPROM from SFP module using ethtool -m sfp. But with ETHTOOL API impossible to read/write from/to PHY devices. -e --eeprom-dump Retrieves and prints an EEPROM dump for the specified network device. You can also type mii info to see which MDIO bus responds to the command. Share. For builtin switch Ethernet PHYs, this function should allow reading the link status, auto-negotiation results, link partner pages, etc. c. driver: ixgbe. e mdio lines are connected to any of the ethernet mac controller and all the phy devices will be accessed using the phy maintainance interface in that mac controller. com/PieVo/mdio-tool for reference. MDIO Registers Describes the MDIO registers in the 40-100GbE IP core example design. 10 / . MIIMADD[0000_0000_0000_0000_0001_0000_0000_0000) In my first posts, I could access the registers of the AXI Ethernet PHY, confirmed by reading 0x5d03 (Xilinx PHY id) at MII index 11 (MDIO PHY address set in IP). };};}; NOTE . The operation of an MMD shall not be It prints READ when it issues the read command (GO in the MDIO lingo). The print command will pretty-print a register. * @speed_hi: High bits of the speed, 1Mb units, 0 to INT_MAX or SPEED_UNKNOWN Size of register dump returned by the ethtool-d|--register-dump DEVNAME Do a register dump. I am facing th The MDIO bus¶ Most network devices are connected to a PHY by means of a management bus. It is possible that the MDIO interface of all instances of CPSW and PRUSS peripherals (if present) returns corrupt read data on MDIO reads (e. However, after some experiments, I could read and write the MDIO registers in the following way (Note that our phy is wired to phy address 1): #include <ti/csl/csl_mdio. Contribute to torvalds/linux development by creating an account on GitHub. Size of register dump Currently, the following message is printed over serial for the image runs: U-Boot 2018. 创 Jan 17, 2017 · 两个工具一个是ethtool工具，一个是源码编译的可以读phy寄存器的工具phyreg。 两者结合使用，事半功倍。 ethtool 可以查看和设置网卡的工作状态，比如查看设置网卡的链 Jan 3, 2023 · mii-diag – Using the –verbose option provides complete Clause 22 register values in hexadecimal. RW [0] Read signal. You switched accounts on another tab or window. (see also Most of the Ethernet PHY support multi-functions and provide much more flexible configure capability to fine tune timing or function enable by configure their registers. ethernet sfp: PHY [mdio-bus:07] driver [Qualcomm On the computer side ethtool eth0 reports that link is detected and tries to send packets on the phy as can be seen from the port LED activity. dtsi for both GEMs:<p></p><p></p><code>&gem2 { status = "okay"; phy-handle = Linux Repository for digilent boards. static int mdio_read(struct net_device *dev, int phy_id, int location) static void mdio_write(struct net_device *dev, int phy_id, int location, int value) in your driver. How can I access to MDIO interface in Linux? Forums 5. Please guide me in this. We want to address the following questions to understand the reported situation: Could you please clarify if the device related to this situation is an adding NIC or LAN card or it is a design using the cited Intel Ethernet Controller? Solved: There is IP175C switch on this board. Using phylink, you can see/change all the usual settings of the PHY using ethtool. 6 mdio rx cpsw 2. Hello, @Sean_Li: Thank you for contacting Intel Embedded Community. It should call generic_mii_ioctl(). The read and write commands are simple register level accessors. kernel / pub / scm / network / ethtool / ethtool / refs/heads/ethtool-3. The MII interfaces are polled at one second intervals. Read at address 0x08000F80 (0xffff8a41ef80): 0x00000000 3. Related Information I noticed that when the NIC is not working though, the output of dmesg and ethtool are showing a different 'physical address' (not the MAC). -w, --watch Watch interface(s) and report changes in link status. Please see https: For Ethernet switches which have both external and internal MDIO busses, the slave MII bus can be utilized to mux/demux MDIO reads and writes towards either internal or external MDIO devices this switch might be connected to: internal PHYs, external PHYs, or even external switches. Ethernet PHY Nov 28, 2019 · 查看MAC和PHY配置和状态工具有 mii-tool/ethtool. Hi, I am working on T1040RDB and I wanted to access (read/write) management PHY registers which connected on mdio bus. 16. Working: dmesg: [ 1. i. 0 Kudos Copy The driver cannot get the meaningful PHY status by reading PHY registers via MDIO/MDC. Regards. If yes, these should be read with the DM814x EMAC MDIO module. camel@achroite> In-Reply-To Linux kernel variant from Analog Devices; see README. However, I believe there's some misunderstanding. Can we use mii and mdio read / write The manufacturer (RTK) of the device PHY has provided a register of our PHY to clarify the problem. It prints ACK when it seen the ACK bit set showing that the read completed and the data is ready. > Intel took over Lantiq some years #include <linux/ethtool. Look at the sources of those programs how to get access to phy api. Once in the kernel we apply a device tree overlay to enable the remaining 3 GEMs. I noticed that when the NIC is not working though, the output of dmesg and ethtool are showing a different 'physical address' (not the MAC). Write the desired register address to register ADDAR 3. MIIMIND ---> [0000_0000_0000_0000_0000_0000_0000_0000] This indicates that the write cycle is complete. The command line tool cmd9500 can be used to read/write PHY registers. When pinging between the S32G and the host machine neither partner is receiving packets according to ifconfig. The Context: Hello, We're doing a Linux BSP for a custom ZynqMP based target. I have checked the hardware circuit The procedure to read Clause 45 registers, for write verifications or general reads, is the same as writes except the fourth step is a read instead of a write. It is still ‘work in progress’. My issue now is with the LINK signal, why it is always 0 and why the auto-negotiation is failing. It is also possible that the MDIO interface becomes unavailable until the next peripheral reset (either by LPSC reset or global device reset with reset isolation Ethtool is a user space utility for displaying and configuring the Network Interface Unit. we verified all the mdio related pinmuxes in both kernel and uboot and its same but only difference is in useraccess(0x48485080) register where after we set go bit in kernel its reading 0x0000ffff and alive register in kernel reads 0 whereas it read 0x3 in uboot. Try putting a printk here to see the phy_id. Ethernet 3 and 4 have TI dp83867 phys over MDIO/EMIO as you can see in the example screenshot from Vivado project: Vivado Configuration >Following is our device tree configuaration over zynqmp. Write the value 0x401F (data,no post increment function field = 01, DEVAD= 31) to register REGCR 4. I'm not using a common MDIO bus for two PHYs. Could you used `ethtool` to check can you read the register of the ethernet 2, 3 &4 ? I have the same issue before, and resloved by update the fpga file - phy_read: Function invoked by the DSA slave MDIO bus when attempting to read the switch port MDIO registers. When I run the example - I get the message . This address post increments. The phy driver makes use of phycontrol libraries and the MDIO read/writes are working good, except that from time to time I encounter strange network But by setting autonegotiation OFF on one card using ethtool, it shows "Link is Up" on one card and not on the other. If the Ethtool does not work, then the registers in the datasheet can be read individually with mdio-tool, which has to be built. But the SIOCGMIIREG and SIOCSMIIREG is not supported any more: root@myimg-64b:/proc/net# mii-tool eth5. 1b’0 . 952301] BPF: get_phy_id: identifying phy [ 0. Remove a previously registered phy device from the MDIO bus * @phydev: phy_device structure to remove * In other devices I use the SIOCGMIIREG and SIOCSMIIREG to write to the mdio registers direct. If unavailable, return 0xffff for each read. Pouyan Azari Intellectual 620 points You can dump registers using ethtool, but for read/write accesses to individual registers you can refer to mdio-tool. It usually prints these so fast that you can't see any delay between Part Number: AM3352 In my design, I am using both MAC, and connected to TI-DP83867 PHY. For example code, you can check EZSDK u Most of the Ethernet PHY support multi-functions and provide much more flexible configure capability to fine tune timing or function enable by configure their registers. 4 %âãÏÓ 2 0 obj >stream xÚí}ÉŽ$IråݾÂÏ ¸Q÷ ( ¬$¦o=S Äœ‚ìn "9¨¾ÌïÏ{¢‹‰š[dFfg 9ͨ‚##^˜é*Ë ÑÅ »Ù›Áÿwþ This adds a netlink interface to make reads/writes to mdio buses. supports-register-dump: yes. -e --eeprom-dump. Below example shows how to set ETHTOOL(8) System Manager's Manual ETHTOOL(8) NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool -h|--help ethtool --version ethtool -a|--show-pause devname ethtool -A|--pause devname [autoneg on|off] [rx on|off] [tx on|off] ethtool -c|--show-coalesce devname ethtool -C|--coalesce devname How can i call the read and write register fuctions from user space. Enable backplane support On 5/6/2021 3:44 am, Martin Blumenstingl wrote: > This email was sent from outside of MaxLinear. 6 supports-test: yes. h> void testMDIOAccess The work around is to only enable the GEM that owns the MDIO bus in the device tree and disable the rest. Examples phytool read eth0/0:3/1 Then after about 50ms more, we see the MDIO begin to poll the registers on all 32 PHY addresses looking for the right PHY IDs. Michael Walle RZT1 + YT8512H How to config register EtherCAT Phy？ RZT1 + KSZ8041 is ok；but The MDC MDIO pin of the RZT1 + YT8512H was viewed with an oscilloscope without any waveform。. Also, some PHYs may need initialization or user/application may need to read/write PHY registers. blob: 8403316eb02bbad1c0bd91344ef82f774552d602 [] [] [] * @mdio_support: Bitmask of %ETH_MDIO_SUPPORTS_* flags for the MDIO Read-only; deprecated. Contribute to PieVo/mdio-tool development by creating an account on GitHub. supports-eeprom-access: yes. ethernet-ffffffff:05, irq=POLL) I want to read/modify the Phy registers at Linux, please note that iam able to read/modify the phy at u-boot using : mii read and mii write commands, but iam unable to read/modify when the linux boots. Driven by MMD during read : The frame format only allows a 5-bit # cat /etc/rc. using: ethtool -d ethX 352 353 Compiling the Kernel with CONFIG_DEBUG_FS the driver will export the following 354 debugfs entries: 355 Mt7621 / mt7530 programming: Disabling Flow Control on all ports Loading For Ethernet switches which have both external and internal MDIO busses, the slave MII bus can be utilized to mux/demux MDIO reads and writes towards either internal or external MDIO devices this switch might be connected to: internal PHYs, external PHYs, or even external switches. Retrieves and prints an EEPROM dump for the specified network device. Vineet static int fixed_mdio_write(struct mii_bus *bus, int phy_addr, int reg_num, Read register 0x8000F80 MDIO User Access Register and see all bit fields 0 (including the GO bit) root@am62xx-evm:~# devmem2 0x8000F80 /dev/mem opened. Writes to undefined registers and read-only registers shall have no effect. android / kernel / common / bcmdhd-3. Also, it allows adjustments to parameters such as auto-negotiation, speed settings, and offload optio Complex operations can be performed atomically. See COPYING file. 访问 https://github. Writing to Extended Registers: As you would have noticed, the register address field is 5 bits. But it seems the mdio read command is not reading the register from Marvell PHY chip. 8 mdio wx cpsw 2. Notes. Ben. / drivers / net / mdio. Thank u. Any changes required to read PHY chip using mdio command. Contribute to Digilent/linux-digilent development by creating an account on GitHub. You signed in with another tab or window. Thanks for your quick response. This article is an attempt to summarise the most useful ethtool commands with examples Ethool provides phy_read: Function invoked by the DSA user MDIO bus when attempting to read the switch port MDIO registers. 38. org, linux-net-drivers@solarflare. * * FEC modes supported by the device can be read via %ETHTOOL_GLINKSETTINGS. get_regs_len: ethtool function returning the register Linux kernel source tree. . * @maxrxpkt: Historically used to report RX IRQ coalescing; now * obsoleted by &struct ethtool_coalesce. Forums 5. /phytool write enp2s0/5/0xd 0x1e’ ‘sudo . You signed out in another tab or window. returning stale or previous data), or We have a similar design where a common MDIO-0 bus of gem0 is shared with rest of the gems(gem1, gem2, gem3). #define SIOCGMIIREG (SIOCDEVPRIVATE+1) /* Read any PHY register */ #define SIOCSMIIREG (SIOCDEVPRIVATE+2) /* Write any PHY register */ #define SIOCGPARAMS For Ethernet switches which have both external and internal MDIO busses, the slave MII bus can be utilized to mux/demux MDIO reads and writes towards either internal or external MDIO devices this switch might be connected to: internal PHYs, external PHYs, or even external switches. The 2-Clause BSD. 27 Summary z This is our last chance to allow older Looks like the PHY is getting read correctly over the MDIO: [ 3. So, only phy addresses from 0x0 to 0x1f can be accessed. Note that this is not failing during an actual MDIO transaction with the PHY -- it never gets to that point. Read-only; deprecated. For builtin switch Ethernet PHYs, this function should allow reading the link status, auto-negotiation results, link partner pages etc. Set Duplex Mode. Contribute to spotify/linux development by creating an account on GitHub. /phytool write enp2s0/5/0xd 0x401e’ ‘sudo . Connect EVM to a host PC via eth0 interface using an ethernet cable, keep eth1 interface The official Linux kernel from Xilinx. So I tried to use ethtool: root@myimg-64b:/proc/net# ethtool -p eth5 2 ethtool-d|--register-dump DEVNAME Do a register dump. 经常使用的工具是ethtool, ethtool可以详细的描述MAC和PHY的相关信息，包括寄存器的配置，相关的统计。 使用语法. Here are my DTS on Hi. returns corrupt read data on MDIO reads (e. Their prototypes are: This is tool to read and write MII registers from ethernet physicals under linux. md for details - analogdevicesinc/linux That is, they hang as soon as the network code reads from a MDIO controller register. The phy is connected to the gpio pins (10, 11) on the mpc8308 controller and it complies to the mdio specification of IEEE 802. -V, --version Display program version information. > to me this seems like an evolution of the Lantiq XWAY PHYs for which > we already have a driver: intel-xway. Contribute to Xilinx/linux-xlnx development by creating an account on GitHub. 473566] davinci_mdio 4a101000. * @speed_hi: High bits of the speed, 1Mb units, 0 to INT_MAX or SPEED_UNKNOWN Size of register dump returned by the Hence going forward it can only be * used to return a value to userspace with GET. I need mii-tool support for this driver. * With autoneg on %ETHTOOL_GFECPARAM can be used to read the current mode. Both PHYs are on a separate GEM, with different MDIO busses (MDIO 2 and MDIO 3). See DM814x TRM, sections 9. mdio sends byte code to the mdio-netlink kernel module that can perform multiple operations, store intermediate values, loop etc. com> To: David Miller <davem@davemloft. Could you used `ethtool` to check can you read the register of the ethernet 2, 3 &4 ? I have the same issue before, and resloved by I found that the hang occurs even if I read the register before I enable MDIO operation. But now I am only able to read the Marvell PHY registers, confirmed by reading 0x5043 (Marvell PHY id) at MII index 1. ethernet sfp: PHY [mdio-bus:07] driver [Qualcomm This patch is to add spoort for the design that has multiple ethernet mac controllers and single mdio bus connected to multiple phy devices. 1 Overview This clause defines the logical and electrical characteristics of an extension to the two signal Management Data Input/Output (MDIO) Interface specified in Clause 22. Can I directly use ethtool API's for this? Thanks & Regards, You may be best off providing a simple driver that exposes MDIO read/write access and implement all of The second part > is to advertise EEE such that this gets reflected in MDIO_AN_EEE_ADV, > also to make sure that we can pass the second check in phy_init_eee(). If left out, the most common registers will be shown. This will help in development or issue debug. (There should be provision for reading/writing different registers using MDIO). ethtool-d|--register-dump DEVNAME Do a register dump. It lets us fetch network interface details like speed, duplex mode, and driver information. 5 mdio rx cpsw 2. net> Cc: netdev@vger. When using the print command, the register is optional. Anyway it is also possible to talk via MDIO bus directly through the IP registers (as stated on the Datasheet (DS580) at page 16. My setup is: Zynq PS Gem 2 <-> GMII to RGMII <-> switch I've disabled the MDIO bus on the Zynq PS and left it unconnected but I'm unable to change the RGMII output clock speed from 2. 5MHz to anything else. On eth0, I RZT1 + YT8512H How to config register EtherCAT Phy？ RZT1 + KSZ8041 is ok；but The MDC MDIO pin of the RZT1 + YT8512H was viewed with an oscilloscope without any waveform。. 4 MDIO and 9. 10BEYST1L chip is soldered on register 7. 3 Clause 45 but it is not a ethernet phy. # ethtool -i eth0. Zynq> mdio read 0x1 0x0900. If file is specified, then use contents of previous raw register dump, rather than reading from the device. In order to take advantage of the PAL, each bus interface needs to be registered as a distinct device. Sign in. h> #include <linux/phy. Management Data Input/Output (MDIO) Interface 45. internal MDIO registers block is mapped for every physical port and MDIO registers subchapter of SerDes chapter from SoC reference manual. 5G PHY a bit. 4. Read the content of the desired extended register set register to register ADDAR. */ #define SIOCSMIIREG 0x8949 /* Write MII PHY register. I want to read/modify the Phy registers at Linux, please note that iam able to read/modify the phy at u-boot using : mii read and mii write commands, but iam unable to read/modify when the linux boots. * FEC settings are configured by link autonegotiation whenever it's enabled. I would like to ask if #define SIOCGMIIREG 0x8948 /* Read MII PHY register. mii-tool indicates that there are no mii transceiver present at 11. 9-rc using KDAB Codebrowser which provides IDE like features for browsing C, C++, Rust & Dart code in your browser When raw is enabled, then ethtool dumps the raw register data to stdout. Hi, I am using a DP83848 TI chipset for ethernet and not able to detect the chip, Can any one help me how to read the registers using MDIO line in. downloaded from Github) for the same. I run the command "ethtool -i eth0" and get the below message. MII read. -e --eeprom-dump Retrieves and prints an EEPROM dump for the specified network device. 2f81db5 100644--- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -2443,6 +2443,9 mdio_register: non unique device name ' eth0 ' ZYNQ GEM: ff0c0000, phyaddr 0, interface rgmii-id; mdio_register: non unique device name ' eth0 ' ZYNQ GEM: ff0c0000, phyaddr 0, interface rgmii-id; mdio_register: non unique device name ' eth0 ' ZYNQ GEM: ff0c0000, phyaddr 0, interface rgmii-id; mdio_register: non unique device name ' eth0 ' No For Ethernet switches which have both external and internal MDIO busses, the slave MII bus can be utilized to mux/demux MDIO reads and writes towards either internal or external MDIO devices this switch might be connected to: internal PHYs, external PHYs, or even external switches. Different devices use different busses (though some share common interfaces). linux 3. If your ioctl calls don't get as far as mdio_read/write, check your ioctl function in your driver. Use as much as possible generic . 4 mdio rx cpsw 2. version: 5.
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